31 August 2026

Tencent releases Hy4 open-weight model with 770B parameters

• Tencent, a Chinese tech company, released Hy4, a free-to-use language model anyone can download and run locally.
• The model has 770 billion parameters, which are numerical values the model adjusts during training to recognize patterns in text.
• Hy4 can process up to 1 million tokens, a unit measuring text length, allowing it to handle very long documents in a single conversation.
• The model includes two reasoning levels, letting users choose between faster responses or more detailed problem-solving approaches.

How it was covered

TLDR AITLDR editorial team

Hy4 is a new open-weight text input language model from Tencent with 770B total parameters and 1M token context window, featuring two reasoning levels.